ecommerce recipie searchable inventory management

Recently we were tasked with building an e-commerce solution for a client that has an old homegrown solution. We have been researching the e-commerce and ubercart modules - with still no clear decision.

A few key points that our clients expect:

• Easy inventory manager
• Ability for a customer to search every field in the product description (something we're unsure either of these modules allow - outside of drupal core search)
• Ability to "Express order" - for repeat customers that know what item # they are looking for, they can enter it in at a prompt and it adds to the cart.